Diptera.info :: Identification queries :: Diptera (adults)
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 Sphaeroceridae sp.
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| Robert Heemskerk |
Posted on 07-01-2008 01:43
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Hi flyforum, some Sphaeroceridae sp., identification is difficult I think? place: Amsterdam forest date: 6-01-2008 size: 6-7mm Robert Heemskerk attached the following image:  [111.57Kb] |
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| Robert Heemskerk |
Posted on 07-01-2008 01:44
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pic 2
Robert Heemskerk attached the following image:  [96.63Kb] Edited by Robert Heemskerk on 07-01-2008 01:44 |
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| Robert Heemskerk |
Posted on 07-01-2008 01:44
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pic 3 (shitting!)
Robert Heemskerk attached the following image:  [138.44Kb] Edited by Robert Heemskerk on 07-01-2008 01:45 |
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| Robert Heemskerk |
Posted on 07-01-2008 01:46
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
pic 4
Robert Heemskerk attached the following image:  [88.84Kb] Edited by Robert Heemskerk on 07-01-2008 01:46 |
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| Tony Irwin |
Posted on 07-01-2008 23:51
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 Member Location: Norwich, England Posts: 7196 Joined: 19.11.04 |
Copromyza sp.
Tony ---------- Tony Irwin |
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| Robert Heemskerk |
Posted on 08-01-2008 00:37
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Wow!, that's rather specific.. On the dutch specieslist: 1. Copromyza: 1. equina 2. nigrina 3. stercoraria Is it easy to explain what makes it Copromyza? Thankx in advance, Robert  |
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| Tony Irwin |
Posted on 08-01-2008 11:41
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Member Location: Norwich, England Posts: 7196 Joined: 19.11.04 |
Robert Heemskerk wrote: Is it easy to explain what makes it Copromyza? Wing venation. In Leptocera and related genera, vein m is abbreviated. In Copromyza vein CuA 1 is abbreviated (as shown very clearly in your pictures 2 and 3). In Sphaerocera the veins are not shortened at all. Tony Irwin attached the following image:  [27.8Kb] Tony ---------- Tony Irwin |
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| Paul Beuk |
Posted on 08-01-2008 12:38
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 Super Administrator Location: Netherlands Posts: 19268 Joined: 11.05.04 |
Not quite that simple, Tony. Those are the characters for the subfamily Copromyzinae. Within that family, Copromyza shuld have a single row of post ocular setae (might be, but I cannot say that with certainty) and there should be a apical spur ventrally on the hind tibiae (none of the pictures has the right angle to confirm its presence). Still, I think you might be right. Based on the dust pattern on the anepisternum (mesopleuron) it should be C. equina. Paul - - - - Paul Beuk on https://diptera.info |
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| jorgemotalmeida |
Posted on 08-01-2008 13:24
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Only for those which are not familiar with the terms: "Those are the characters for the subfamily Copromyzinae. Within that family, Copromyza should have a single row of post ocular setae (might be, but I cannot say that with certainty) and there should be a apical  spur ventrally on the hind tibiae (none of the pictures has the right angle to confirm its presence).Still, I think you might be right. Based on the dust pattern on the anepisternum (mesopleuron) it should be C. equina." setae is the plural form, seta is the singular form. See here for more details (7th post): http://www.dipter...ad_id=8790 spur - very strong bristle/seta. See for example Mycetophilidae - Neoclastobasis sibirica - (http://diptera.in...to_id=2440 -- gallery) that has spurs in tibiae. see here for anepisternum (=mesopleuron) -it is the number 21 http://www.dipter...ad_id=8803 Edited by jorgemotalmeida on 08-01-2008 13:25 |
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| Tony Irwin |
Posted on 08-01-2008 13:52
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Member Location: Norwich, England Posts: 7196 Joined: 19.11.04 |
My apologies - Paul is correct - I should have said Copromyzinae, rather than Copromyza.
Tony ---------- Tony Irwin |
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but don't see the image in the post.